Which hazardous material is specifically permitted on a motor vehicle carrying passengers for hire, subject to applicable transportation requirements?
Correct answer: B – Small-arms ammunition
Federal regulations specifically list small-arms ammunition among the limited hazardous materials authorized on passenger-carrying vehicles. Small-arms ammunition is also the only Class 1 material that may be carried in the passenger-carrying space under this rule. Other packaging, marking, and transportation requirements applicable to the shipment must still be followed.
Source: 49 CFR § 177.870(b)–(c) – Regulations for passenger carrying vehicles, 49 CFR § 173.63(b) – Packaging exceptions

